I believe the answer is: <span>a secret intelligence "finding" signed by the president
Even if there is no fact about the finding, all of them had legal ground to act on their own since the finding is acknowledge by the president.
The signed finding indicates that even if their actions were a mistake, the the president would take the responsibility for their action.</span>
Answer:
The correct statment would be: "the hormons of the endocrine system exert their action by lock and key mechanism."
Explanation:
The endoncrine system is responsable of the release of hormons under certain conditions, and in different organs, they go trough the bloodstream. The lock and key mechanism is explained as how the receptors block or release hormonos or instead they don´t. The endocrine system is responsable for the reproductive system, and regulates metabolic processes.
The parthenon or the temple of athena
Venetian explorer, Marco Polo, told his cellmate during his imprisonment after the Venetian-Genoese War about his travels to the Far East. These accounts became a book , later entitled "The Travels of Marco Polo" which was influential in sparking people's curiosity of the East.
The first impact was that Marco Polo was able to bring elements of Western culture to the East and Eastern culture back to the West. Because of his exploration Indonesia, Mongolia, Sri Lanka, and India, China began to experience Western culture.
Next, Marco Polo's interactions with Mongolian emperor Kublai Khan led to commercial exchange with Western merchants who were now arriving in China. This increased Chinese's growth as a civilization.
The Silk Road, an easier route to travel around the Gobi Desert, traced by the Polos had a huge effect in the future of European and Chinese interaction. It would prove to be a more effective route than to sail the oceans to China.
